GM 19210686
Fuel Pressure Regulator

Extract the Fuel Pressure Regulator starting by removing the upper intake manifold assembly followed by the Fuel Pressure Regulator retainer clip removal. Cut off the Fuel Pressure Regulator from its housing by pulling and twisting while using a shop towel to prevent fuel spills. The next step is to delete the regulator seal lower o-ring followed by the regulator assembly filter and the regulator seal upper o-ring and the regulator seal back up ring. The housing of the Fuel Pressure Regulator should be covered to protect against contamination while all o-rings are thrown away. Prior to refitting the Fuel Pressure Regulator always check the filter screen for contamination because this could lead to regulator failure. Apply engine oil for lubrication to new o-rings before setting the regulator seal back up ring, the regulator seal upper o-ring, the regulator assembly filter, and finally the regulator seal lower o-ring. Fit the regulator with the vacuum tube facing downward before fastening it with the retainer clip. Reinstall the upper manifold assembly afterward tightening the fuel filler cap and then reconnect the negative Battery Cable. Examine for leakage by turning the ignition on for two seconds followed by a ten-second off time before turning it on again to look for fuel leakage.

The service and repair of the Fuel Pressure Regulator starts with fuel system pressure relief through execution of the procedures in computers and control systems. Service of the Fuel Pressure Regulator begins with removal of both upper intake manifold assembly and Fuel Pressure Regulator retainer clip. Pull and twist the Fuel Pressure Regulator with a shop towel beneath it to detach it from the Fuel Pressure Regulator housing. Start the replacement by first removing the regulator seal lower o-ring, the regulator assembly filter along with the regulator seal upper o-ring and the regulator seal back up ring. Discard all o-rings. Before reinstalling the Fuel Pressure Regulator check the filter screen for damage since replacement of the regulator may be required. Begin by applying clean engine oil to the new o-rings, and proceed with installation of the regulator seal back up ring followed by regulator seal upper o-ring followed by regulator assembly filter then finally regulator seal lower o-ring. The regulator assembly goes together by positioning the vacuum tube downward into the retainer clip before installing both Fuel Pressure Regulator retainer clip and upper manifold assembly. Verify the absence of leaks by first turning on the ignition with power off for two seconds subsequently turning power off for ten seconds then checking for another two seconds with the ignition on but the engine off. During these inspections check for fuel system leaks. Finally, install the engine cover.

The service procedure for the Fuel Pressure Regulator begins with removing both engine cover and upper intake manifold assembly components. First remove the clip that holds the Fuel Pressure Regulator retainer before you pull out the retainer from its housing while using a shop towel to absorb fuel leakage. The process requires removal of the regulator seal lower o-ring followed by the regulator assembly filter and the regulator seal upper o-ring and finishing with the regulator seal back up ring. You need to cover the Fuel Pressure Regulator housing before discarding its o-rings because contamination must be prevented. During reinstallation of the Fuel Pressure Regulator you should check for contamination in the filter screen and replace the regulator if any evidence of problems exists. Apply clean engine oil to new o-rings after which you should place the regulator seal back up ring followed by the regulator seal upper o-ring then the regulator assembly filter and finally the regulator seal lower o-ring . Position the vacuum tube downwards within the regulator assembly before fastening it with the retainer clip. You should put back the upper manifold assembly along with tightening the fuel filler cap before reconnecting the negative Battery Cable. Turn the ignition on for 2 seconds followed by turning it off for 10 seconds before another 2-second ignition on period to check for fuel leaks. Finally, install the engine cover.

The repair process for the Fuel Pressure Regulator starts by disconnecting the negative battery terminal and follows with using the fuel pressure gauge (J 34730-1A). The fuel pressure gauge (J 34730-1A) should be used to empty fuel system pressure from the system. You should begin by taking off the upper Intake Manifold before disconnecting the vacuum line running to the regulator. First remove the snap ring from the pressure regulator housing after which you should set a towel beneath the regulator to catch any leaking fuel. Twisting back and forth motions while pulling action enables you to take out the Fuel Pressure Regulator from its fuel rail socket. Remove the pressure regulator o-ring together with its filter and large o-ring along with its o-ring back up so you can discard all of these o-rings. Clean engine oil should be used for lubricating new pressure regulator o-rings before installing the o-ring back up , large o-ring , filter , and small o-ring onto the regulator. The next step includes inserting the pressure regulator into the fuel rail housing before carefully inserting the snap ring retainer into its designated slot on the fuel regulator housing. A seat check of the regulator must be performed by pulling on it before reattaching the negative Battery Cable while looking for fuel leaks in the system through multiple ignition switch cycles. The last step involves attaching the vacuum line to the regulator before reinstalling the upper Intake Manifold.

The service and repair of the Fuel Pressure Regulator starts with removing the upper intake manifold assembly. Use a shop towel underneath the Fuel Pressure Regulator to catch fuel while you remove the retainer clip by hand then gently pull and twist the regulator from the housing. Before servicing the regulator you must remove its lower o-ring, the assembly filter and upper o-ring along with back up ring. The housing of the Fuel Pressure Regulator needs coverage to avoid contamination and the o-rings must be thrown away. A necessary inspection of the filter screen should be performed before reinstalling the Fuel Pressure Regulator. Manufacturers suggest replacing the regulator if contamination is detected. Place clean engine oil on the new o-rings before you install the regulator seal back up ring and then the regulator seal upper o-ring followed by the regulator assembly filter and finally the regulator seal lower o-ring. Fitting the regulator will require you to direct the vacuum tube downwards before installing it in the regulator retainer clip before placing the Fuel Pressure Regulator retainer clip and the upper manifold assembly. Return to the battery life installation, put on the fuel filler cap then reinstall the negative Battery Cable. To inspect for leaks follow the procedure of turning on the ignition for 2 seconds followed by an off period of 10 seconds and then back to on and check for fuel leaks.

A technician should start Fuel Pressure Regulator repairs and servicing by uninstalling the upper intake manifold assembly. The first step is to remove the Fuel Pressure Regulator retainer clip. After that, pull and twist the Fuel Pressure Regulator while using a shop towel to absorb fuel that leaks out from the housing. One needs to remove both the regulator seal lower o-ring and the regulator assembly filter plus the regulator seal upper o-ring and regulator seal back up ring from the Fuel Pressure Regulator setup. Protect the Fuel Pressure Regulator housing from contamination by using a cover and discard the applied o-rings. It is vital to replace the Fuel Pressure Regulator only after inspecting and potentially changing the filter screen for any evidence of contamination. Place clean engine oil on the o-rings before inserting the regulator seal back up ring followed by the regulator seal upper o-ring and regulator assembly filter and finally the regulator seal lower o-ring. Install the Fuel Pressure Regulator by placing its vacuum tube facing down inside the regulator retainer clip and then add the Fuel Pressure Regulator retainer clip followed by the upper manifold assembly. Connect the negative Battery Cable while tightening the fuel filler cap. End the check by turning the ignition on twice during a 2-second period followed by a 10-second off interval before turning on again to verify fuel leak presence.

Starting the Fuel Pressure Regulator service requires users to detach the negative Battery Cable and remove the engine sight shield. When servicing the Fuel Pressure Regulator start by releasing fuel system pressure while removing its vacuum line. Sweep dirt off the Fuel Pressure Regulator retaining part and adjacent components before taking out the Fuel Pressure Regulator retainer and pressure regulator unit from the fuel regulator housing. Starting with the back up ring go under the Fuel Pressure Regulator followed by application of a new large o-ring and a regulator filter. New small o-rings need placement on the Fuel Pressure Regulator followed by engine oil lubrication of both large and small o-rings. Install the Fuel Pressure Regulator into the regulator housing of the Fuel Rail while using a fresh Fuel Pressure Regulator retainer. Connect the vacuum line to the Fuel Pressure Regulator and the negative terminal lead while tightening the fuel tank lid. The ignition system should be turned on followed by a 2 second period before shutting off for 10 seconds before the engine is restarted to detect fuel leaks. The last step involves putting back the engine sight shield.

The replacement process for the Fuel Pressure Regulator starts with draining the fuel system pressure. The next procedure requires removal of both the upper intake manifold assembly and Fuel Pressure Regulator retainer clip. You should detach the Fuel Pressure Regulator from its housing by twisting and pulling it while simultaneously using a shop towel to absorb any leaking fuel. The first task involves removing the regulator seal lower o-ring followed by the regulator assembly filter and then the regulator seal upper o-ring and finally the regulator seal back up ring. Protect the Fuel Pressure Regulator housing with covering material while discarding all o-rings. Inspection of the regulator's filter screen must be done for contamination before deciding to replace the regulator. Apply engine oil to your new rings before installing the regulator seal back up ring followed by the regulator seal upper o-ring and the regulator assembly filter and completing with the regulator seal lower o-ring. Position the vacuum tube downwards while inserting the regulator into the retainer clip and complete installation of the Fuel Pressure Regulator retainer clip. After reinstalling the upper manifold component set the negative battery connection in place. Perform a leak check by enabling the ignition system with the engine in off position for 2 seconds then disabling it for 10 seconds followed by another ignition turn-on with the engine inactive and verify fuel leakage. Finally, install the engine cover.

The first step of Fuel Pressure Regulator servicing requires using fuel pressure gauge (J 34730-1A) alongside other needed tools. The first step should involve disconnecting the negative Battery Cable followed by lowering fuel system pressure. The initial service begins with removal of the upper intake manifold assembly after which you should remove the Fuel Pressure Regulator retainer clip. Use a shop towel to contain spilled fuel as you gently extract and turn the Fuel Pressure Regulator from its regulator housing by employing a pulling and twisting motion. After disconnecting electricity from the negative side of the battery and draining system pressure you must take away the regulator seal lower o-ring , the regulator assembly filter , the regulator seal upper o-ring , and the regulator seal back up ring . Apply a cover over the Fuel Pressure Regulator housing to stop contamination before discarding all o-rings. Inspection of the filter screen must happen before regulator reinstallation because regulator replacement might be required when contamination exists. Apply engine oil on new o-rings before placing in their respective order of the regulator seal back up ring , the regulator seal upper o-ring , the regulator assembly filter , and the regulator seal lower o-ring . Position the vacuum tube downward when building the regulator then fasten it by installing the retainer clip. The service procedure continues with the installation of the upper manifold assembly while tightening the fuel filler cap followed by reattaching the negative Battery Cable. Complete the leak inspection procedure by activating the ignition for two seconds followed by ten seconds of off time then back to on position to verify fuel leakage.

The service procedure for Fuel Pressure Regulator starts by removing engine covers followed by upper intake manifold elements. The service begins with removing Fuel Pressure Regulator retainer clip while carefully drawing the Fuel Pressure Regulator from the housing but using a shop towel to absorb potential fuel spills. The Fuel Pressure Regulator housing requires sealing with protective material after removal of the regulator seal lower o-ring as well as the regulator assembly filter and regulator seal upper o-ring and regulator seal back up ring. Discard these o-rings due to contamination risk. It is essential to check the Fuel Pressure Regulator filter screen for contamination during installation and perform a new regulator replacement if needed. Clean engine oil must be used to lubricate the components before installation of the regulator seal back up ring followed by the regulator seal upper o-ring then the regulator assembly filter then the regulator seal lower o-ring. Fit the vacuum tube downward in the regulator and fasten it using the retainer clip. After reattaching the upper manifold assembly the mechanic should secure the fuel filler cap while resetting the negative Battery Cable. First turn on ignition for two seconds then off for ten seconds and perform another on check to inspect for fuel leaks. Finally, install the engine cover.

The first priority when replacing a Fuel Pressure Regulator requires eliminating pressure from the fuel system. You should first extract the upper intake manifold assembly and then detach the Fuel Pressure Regulator retainer clip. You should twist-maneuver the Fuel Pressure Regulator from its housing position through a shop towel protection while retrieving spilled fuel. Take off the four components of the regulator system beginning with the regulator seal lower o-ring followed by the regulator assembly filter then the regulator seal upper o-ring and ending with the regulator seal back up ring before discarding them. Check the filter screen for debris when reinstalling the Fuel Pressure Regulator and change the unit if it contains contamination. Place new o-rings under clean engine oil before installing the regulator seal back up ring followed by the regulator seal upper o-ring then the regulator assembly filter and concluding with the regulator seal lower o-ring. Mount the regulator by pointing the vacuum tube downward before fastening it with the retainer clip. The negative Battery Cable must be reattached after reassembly of the upper manifold before reinstalling the engine cover. The inspection for leaks requires turning on the ignition with engine power off for 2 seconds followed by turning it off for 10 seconds and then turning it on with power off again for fuel leak detection. Finally, install the engine cover.

The service and repair of the Fuel Pressure Regulator starts with removing the upper intake manifold assembly. Use a shop towel underneath the Fuel Pressure Regulator to catch fuel while you remove the retainer clip by hand then gently pull and twist the regulator from the housing. Before servicing the regulator you must remove its lower o-ring, the assembly filter and upper o-ring along with back up ring. The housing of the Fuel Pressure Regulator needs coverage to avoid contamination and the o-rings must be thrown away. A necessary inspection of the filter screen should be performed before reinstalling the Fuel Pressure Regulator. Manufacturers suggest replacing the regulator if contamination is detected. Place clean engine oil on the new o-rings before you install the regulator seal back up ring and then the regulator seal upper o-ring followed by the regulator assembly filter and finally the regulator seal lower o-ring. Fitting the regulator will require you to direct the vacuum tube downwards before installing it in the regulator retainer clip before placing the Fuel Pressure Regulator retainer clip and the upper manifold assembly. Return to the battery life installation, put on the fuel filler cap then reinstall the negative Battery Cable. To inspect for leaks follow the procedure of turning on the ignition for 2 seconds followed by an off period of 10 seconds and then back to on and check for fuel leaks.

Always use new O-rings and a new retaining clip.

Install the engine wiring harness into the retaining clips at the front of the engine and reinstall the air intake resonator.

Reconnect the fuel pressure regulator vacuum hose, replace the fuel fill cap, and connect the negative battery cable.

Remove the fuel pressure regulator retainer and then take out the fuel pressure regulator from the fuel pressure regulator housing.

Lubricate the new O-ring seals with clean engine oil and assemble the new backup ring, regulator seal O-ring, regulator filter, and regulator seal O-ring onto the fuel pressure regulator.

Disconnect the negative battery cable and relieve the fuel system pressure.

Take out the fuel pressure regulator retaining clip.

Add a new small O-ring to the fuel pressure regulator and lubricate both the large and small O-rings with clean engine oil.

Place the backup ring on the fuel pressure regulator, followed by a new large O-ring and the regulator filter.

The regulator seal O-ring, regulator filter, regulator seal O-ring, and regulator seal backup ring.

Turn ON the ignition for 2 seconds, turn it OFF for 10 seconds, and then turn it ON again to check for fuel leaks.

Push the fuel pressure regulator into the regulator housing on the fuel rail and install a new fuel pressure regulator retainer.

Clean any dirt from the fuel pressure regulator and the surrounding area.

Discard the O-rings.

Replace the regulator.

Ensure that none of the following parts remain in the fuel rail: Backup ring, Regulator seal O-ring, Regulator filter, and Regulator seal O-ring.

Take out the fuel pressure regulator retainer clip.

Disconnect the fuel pressure regulator vacuum line.